Stacked Burner Channel Layout for Reliable Port Ignition
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Solution Overview
Problem
Existing stacked burners have limited reliability in igniting the first burner ports and exhibit undesired flame quality, including flame lifting during ignition.
Innovation Solution
A burner design with a base and spreader configuration that includes channels for fuel distribution and ignition ports, where the spreader's lower surface is interrupted by channels and partially enclosed by the base's upper surface to define flame and ignition ports, allowing for reliable ignition and controlled flame output.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If channels are defined only in the spreader for ignition ports, then the structure is simpler, but ignition reliability of the first burner ports is limited
Solution Approach 1:
The patent divides the channel configuration into two segments: channels in the spreader for flame ports and channels in the base for ignition ports. This segmentation allows each component to specialize in its function, improving ignition reliability while maintaining manageable structural complexity.
Solution Approach 2:
The base acts as an intermediary structure that provides channels for fuel delivery to the ignition ports, enabling reliable ignition without requiring complex modifications to the spreader alone. The base channels serve as a mediator between the fuel source and the ignition point.
2Ease of manufacture
If the upper surface of the base is flat and uninterrupted, then manufacturing is easier, but flame quality deteriorates with lifting during ignition
Solution Approach 1:
The base upper surface transitions from a completely flat structure to a locally modified structure with channels in specific regions. This local quality change allows fuel delivery to ignition ports while maintaining ease of manufacture by limiting modifications to only where needed, rather than the entire surface.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design ensures faster and more reliable ignition of the first flame ports, maintains acceptable flame length, and reduces flame lifting, providing consistent and efficient cooking performance.
Implementation Method 1
An ignition electrode can be positioned within the ignition cavity so as to produce an ignition spark between the electrode and a portion of the base or the spreader
Implementation Method 2
channels can be defined in the lower surface of the spreader from the lower cavity of the spreader into an adjacent portion of the ignition cavity to provide fuel to the cavity
Implementation Method 3
The holder may be configured to mix the gaseous fuel with air in a desired proportional range and/or the burner may be configured to draw in air for mixing with the supplied gaseous fuel
Implementation Method 4
The spreader can include an internal wall that separates a lower portion of the spreader, associated with the first set of ports, with an upper portion, associated with the second set of ports
Data Source
AI summary
A burner for a cooktop includes a base defining a first side wall having an annular main portion and an ignition portion extending inwardly with respect to the annular main portion, the first side wall including at least one ignition channel extending from an interior thereof to an exterior within the ignition portion, an upper surface of the base extending inwardly from the side wall. The burner further includes a spreader removably disposed over the base. The spreader defines a lower portion enclosing a first distribution chamber. The lower portion defines a first set of flame ports from the first distribution chamber to an exterior of the burner and a continuous planar portion extending over the ignition portion of the first side wall to at least partially enclose at least one respective ignition port from the first distribution chamber to the exterior within the ignition portion.